Coating & Plating


Top-Notch Ceramic Filled Fluorocarbon Coating division allows Torque Bolts to offer unrivaled delivery times.

Coatings performed in-house:


Coatings performed in-house:

  • ELECTRO ZINC PLATING (with optional Hydrogen De-Embrittlement) –  (Various Colours)  BS EN ISO 2081 – BS 7371 – ASTM B633
  • PTFE – FLUOROCARBON COATING – Xylan 1014 – Xylan 1052 – Xylan 1070 – Xylan 1424 (Various Colours)

Before the plating process is performed, every component is subjected to the following processes :

  • Surface Cleaning – Metal surfaces are cleaned by chemical or by thermal degreasing and/or
  • Surface Blast – Metal surfaces are blasted with the appropriate abrasive blast medium

Every component that requires PTFE coating is then subjected to a meticulous quality process that includes:

  • Basecoat Application – As per applicable specification, surfaces are coated with either phosphate, sacrificial zinc base coat, stated primer, or Xylar / ceramic metallic base-coat.
  • Top-coat Application – All surfaces are sprayed with the desired PTFE – Fluorocarbon to meet manufacturers recommendations on total dry film thickness.
  • Thermal Cure – Parts are thermally cured in controlled ovens to exact manufacturer’s procedures to ensure maximum corrosion protection and adhesion properties are obtained.
  • Verification Testing – On completion of the coating process, all batches are subjected to a thorough testing procedure that includes Cure Test, Adhesion Check, Thickness Check and Pencil Hardness Test. All results are recorded and kept on file. We also record Relative Humidity, Dew Point, Substrate Temperature and Air Temperature.

Other coating offerings include but are not limited to:

Hot-Dip Galvanising – ASTM A153 / ISO 1461 Aluminizing – ISO 2063 Electro Cadmium Plating – ASTM B766
Electroless Nickel Plating – ASTM B733 Electro Zinc/Nickel Plating – ASTM B841 Electro Zinc/Cobalt Plating – ASTM B840
Mechanical Zinc Coating – ASTM B695 Nickel Plating – ASTM B639 Sermaguard – 1105 / 1280
Sheradising – BS EN ISO 17668 Silver Plating – ASTM B254 – B700 Pickling & Passivation – ASTM A380
Zinc Coating (Dacromet 320 / 500) – ASTM F1136 Zinc Nickel Plating – ES313 Zinc Phosphate Coating / Manganese Phosphate Coating (with optional Hydrogen De-Embrittlement) – ASTM F1137